Bug 2512286 (CVE-2026-70639)

Summary: CVE-2026-70639 llama.cpp: llama.cpp: Denial of Service in Android JNI wrapper via malicious model file
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
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Priority: medium    
Version: unspecifiedKeywords: Security
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OS: Linux   
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A flaw was found in llama.cpp. A null pointer dereference vulnerability exists in the LLaMA-Android JNI wrapper. This flaw allows an attacker to provide a malicious or corrupt model file, which causes the `bench_1model()` function to attempt to use an invalid memory address. This leads to a crash of the Android application, resulting in a denial of service (DoS) where the application becomes unavailable.
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Description OSIDB Bzimport 2026-08-06 22:27:15 UTC 
llama.cpp builds b1886 through b7445 contain a null pointer dereference vulnerability in the LLaMA-Android JNI wrapper where the bench_1model() function fails to validate the model context pointer before dereferencing it. Attackers can supply a malicious, corrupt, or truncated model file to trigger a null context condition, causing a SIGSEGV crash that terminates the Android application process and results in denial of service.